<?php

namespace app\admin\controller;

use app\common\controller\Backend;

/**
 * 图片管理
 *
 * @icon fa fa-circle-o
 */
class Pic extends Backend {

    /**
     * Pic模型对象
     * @var \app\admin\model\Pic
     */
    protected $model = null;

    public function _initialize() {
        parent::_initialize();
        $this->model = model('Pic');
    }

    /**
     * 默认生成的控制器所继承的父类中有index/add/edit/del/multi五个基础方法、destroy/restore/recyclebin三个回收站方法
     * 因此在当前控制器中可不用编写增删改查的代码,除非需要自己控制这部分逻辑
     * 需要将application/admin/library/traits/Backend.php中对应的方法复制到当前控制器,然后进行修改
     */


    /**
     * 添加
     */
    public function add() {
        if ($this->request->isPost()) {
            $params = $this->request->post("row/a");
            if ($params) {
                if ($this->dataLimit && $this->dataLimitFieldAutoFill) {
                    $params[$this->dataLimitField] = $this->auth->id;
                }
                try {
                    //是否采用模型验证
                    if ($this->modelValidate) {
                        $name = basename(str_replace('\\', '/', get_class($this->model)));
                        $validate = is_bool($this->modelValidate) ? ($this->modelSceneValidate ? $name . '.add' : true) : $this->modelValidate;
                        $this->model->validate($validate);
                    }

                    $img_index = $this->model->order('img_index', 'desc')->value('img_index');
                    $params['img_index'] = $img_index + 1;
                    $result = $this->model->allowField(true)->save($params);
                    if ($result !== false) {
                        $this->success();
                    } else {
                        $this->error($this->model->getError());
                    }
                } catch (\think\exception\PDOException $e) {
                    $this->error($e->getMessage());
                }
            }
            $this->error(__('Parameter %s can not be empty', ''));
        }
        return $this->view->fetch();
    }

    /**
     * 删除
     */
    public function del($ids = "") {
        if ($ids) {
            $pk = $this->model->getPk();
            $adminIds = $this->getDataLimitAdminIds();
            if (is_array($adminIds)) {
                $count = $this->model->where($this->dataLimitField, 'in', $adminIds);
            }
            $list = $this->model->where($pk, 'in', $ids)->select();
            $count = 0;
            foreach ($list as $k => $v) {
                $count += $v->delete();
            }
            if ($count) {

                $img_list = $this->model->order('img_id', 'asc')->select();

                $img_index = 0;
                foreach ($img_list as $val) {
                    $this->model->where(['img_id' => $val['img_id']])->update(['img_index' => $img_index]);
                    $img_index++;
                }

                $this->success();
            } else {
                $this->error(__('No rows were deleted'));
            }
        }
        $this->error(__('Parameter %s can not be empty', 'ids'));
    }

    public function preview($ids = NULL){
        $row = $this->model->get($ids);
        $index=(int) $row->img_index;
        $index++;
        $this->assign('type',base64_encode('type='.$index));
        return $this->view->fetch();
    }
}
